1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Ver 2 2008 08 19 Revised Revised 3.2, 3.2.2 & 3.2.3 R. Patel, FNA 2008 02 07 Activated R. Patel Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 1 of 2 CABLE, TIN PLATED COPPER CONDUCTOR, UN-INSULATED WSS-M1L
2、123-A6 1. SCOPE The conductors defined by this specification are multi strands and un-insulated. 2. APPLICATION This specification was released for stranded ground strap applications. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.1 STAND
3、ARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CONDUCTOR (SAE J1128/ASTM B 33/ASTM B 193) 3.2.1 The conductors shall meet the requirements of Table 1 of this specificati
4、on. 3.2.2 Before Bunching The wire must meet the requirements of ASTM B 33 for tensile strength, elongation, resistivity, dimensions and finish. 3.2.3 Conductor resistance shall be measured on a 1050 mm cable (use of a longer specimen is optional). Solder (optional) 25 mm along each end of the speci
5、men. Condition the specimen for a minimum of 4 hours at 23 C +/- 5 C. Measure the unsoldered length, the ambient temperature, and the resistance of the specimen. Calculate the resistance per meter. Calculate the resistance at 20 C using the temperature correction method outlined in ASTM B 193. The m
6、aximum resistance values shall conform to those shown in Table 1. ENGINEERING MATERIAL SPECIFICATION WSS-M1L123-A6 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 2 Table 1 SAE Wire Size Minimum number of Strands Conductor dia. Nom. Size mm (in.) Reference onl
7、y Minimum Conductor Area mm(cir. mil.) Nominal Strand Size mm (in.) Max. Resistance 20 C (mohms/m) Reference only 22 7 0.76 (0.030) 0.32 (672) 0.25 (0.0100) 57.8 20 7 0.97 (0.038) 0.51 (1072) 0.32 (0.0126) 36.4 18 16 1.17 (0.046) 0.76 (1537) 0.25 (0.0100) 24.7 18 19 1.17 (0.046) 0.76 (1537) 0.23 (0.0092) 24.7 16 19 1.45 (0.057) 1.12 (2336) 0.28 (0.0113) 16.6 14 19 1.80 (0.071) 1.85 (3702) 0.36 (0.0142) 10.0 12 19 2.29 (0.090) 2.91 (5833) 0.45 (0.0179) 6.37
